More than 80 percent of white evangelical Christians voted for President Donald Trump, a candidate whose personal behavior arguably conflicts with the family values of traditional Christianity.

His purported marital infidelities, the vulgar way in which he spoke of women in the now infamous “Access Hollywood” interview and now, his alleged affair with adult film star Stormy Daniels all seem pretty contrary to the ways of the church.

But in “Believe Me: The Evangelical Road to Donald Trump,” a new book by John Fea, a history professor at Messiah College in Mechanicsburg, Pa., the politicization of evangelicals and their overwhelming support of Trump can be explained as a natural corollary of their “culture war” begun in the 1970s — which includes a resolute stance against abortion and the defense of “religious liberty,” as they define it.